Reach at least level 30 in World Tour Mode by the time you reach the last boss.
After you beat him, you'll fight on three extra stages. First beat Guile to
enable him as a playable character.
Enable Evil Ryu:
After beating Guile, you'll face Evil Ryu. Beat him to make him playable.
Enable Shin Akuma:
After Evil Ryu, the final battle will be against Shin Akuma. Beat him to enable
him as a playable character. To choose him, hold L2 while choosing Akuma at
the Chracter Select screen.
Survival Mode and Team Battle:
Beat World Tour Mode at least once to open up Survival Mode and Team Battle.
Dramatic Battle Mode and Final Battle:
Beat Arcade mode on the highest difficulty setting (Level 8) to open up Dramatic
Battle and Final Battle modes.
Beat Arcade mode on level 6.
Saikyo Mode and Mazi Mode:
Beat Arcade mode on level 7.
Play for 96 hours to open up all of the extra modes. Check out how many hours
you've played in the options menu.
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Thanks to Revolution readers Cloud Tran, Azizul Hakim bin Hj Harun, rowland,
M@KO THOM@S, Jeremiah E. Aguilar, Andy Deng, David Champlin, and beaker!